Soil survey of Clarke County, Iowa
By: by A.M. O'Neal and C.B. Boatwright.
Contributors: Boatwright, C. B.; United States. Bureau of Soils.; Iowa Agricultural Experiment Station.
Publisher: Government Printing Office
Published: 1926
Place of publication: Washington, D.C
Language: eng
Number of pages: 24
Subjects: Soils -- Iowa -- Clarke County -- Maps.; Soil surveys -- Iowa -- Clarke County.
Genres: Maps.
Notes: United States Dept. of Agriculture, Bureau of Soils, in cooperation with the Iowa Agricultural Experiment Station.

Advance sheets -- Field operations of the Bureau of Soils, 1923.